Outer Limits 4x4 Board

I just bought a 60 series 2H diesel with AIT Turbo kit fitted. It seems to run perfectly, only blowing some black smoke at full throttle on take off, and a fair bit more at peak revs, but nothing in between. It is auto, and running only 9psi boost. I bought it to get rid of the petrol guzzling pajero, but it used less than the 60 is. Please help. I would be greatful of any suggestions. I haven't really had it out on the highway, so they are all city kms. What should I expect to get?

Sorry, forgot to mention that I am just running 31's, tyre pressures at 35psi, usually only use half throttle even up hills, although there is a few hills on the way to work. Thanks.

NHV6 wrote:What should I expect to get?

I'm getting around 18l/100km in a fresh non-turbo 2H Troopy (manual). That's 50% city 50% country/offroad, on 37's.

If i was running 31's i'd want to be seeing much better km with or without a turbo - but i suspect the auto would chew through the juice a bit more and you're probably using all that extra turbo-power.

-Stu

i get bout 12L/100km on a crapped out old 2H that sounds like it's about to give birth. Both country and city driving. 5sp manual with 32s and tyre pressure at 45psi on splits

How fast are you driving it?

Reasone I ask is, in my old 12ht 60- i could get up to 780kms cruising at 95km/h per tank, but if you went over that and sat on around 110/120 km/h it would return the results closer to what your talking about.

My2C

Daniels

Service it, drop unneeded weight.

I"m getting pretty similar fuel consumption out of mine :(

I've been recommended to get injectors / pump checked.

Will await other replys aswell.

Getting 15L/100k around town in HJ60 2H turbo (auto trans). Pretty stock, 31's.

makes my mid 13's/100 seem ok then

:S

Are the tanks in 60s 90 litres or 80?

have a look at this, seems that they hold 90 litres.

http://cc.oulu.fi/~thu/LC/HJ61/J6.html


I get 9.8 km per litre out of my '87 HJ61, (manual trans) before I converted it from auto I used to get 7.4 km per litre. Although I did open up the exhaust the same time that I converted it to 5 speed.

Doesn't matter how its driven. Flat out or highway cruising (90km/h) it just chews. Always exactly the same 19.8l/100km. Seems very strange. Might have to bite the bullet and get it tuned.

NHV6 wrote:Doesn't matter how its driven. Flat out or highway cruising (90km/h) it just chews. Always exactly the same 19.8l/100km. Seems very strange. Might have to bite the bullet and get it tuned.

timing could be out, but for it to be out someone would have had to remove the injection pump at some stage.

Pump and injectors look like they have been tinkered with. Would timing really cause that much of a difference? I notice that if i rev it flat out in neutral it blows a big cloud of black smoke. Also when you give it a rev from idle it also blows black smoke, but seems fine mid range. I'll check the timing tomorrow. Also, how do you know if your injectors are stuffed?

Also, if it means anything it stalls if you're climbing a steep hill in low range then back off and it rolls back a bit in D. I thought you would have to really try to snuff out a diesel.

sounds like someone has wound the fuel up too much on the pump. What you really have to be worried about is it getting too hot and cooking the engine.

do a search for adjusting the fuel pump, and wind it back a bit. You really need to fit a pyrometer post turbo, and tune it using that.

i haven't got a pyro guage yet, but i played with the fuel screw. i ended up 1/4 turn out, as it dropped the power a bit but felt smoother and less smoke. first i wound it in 1/4 turn and it turned into a smoke stack. heaps of power though. i will get a pyro soon hopefully, and also adjust the timing on the weekend.

I pulled the injectors out today and checked the spray patterns. They are not real good. I had one spray nicely, the rest shot out like a water pistol. Going to get new injectors and see how it goes. How much difference can injectors make to the economy if they arent right? The face of the injector looks like it is melted or dented around the nozzle tip. Its not flat like i expected. What could cause this, or are they meant to be like that?

been on night shift the last week hence the late reply.

I would suggest taking the injectors to a diesel mech/fitter/engine reconditioner and have them checked, they may be able to be saved. Might be worth comparing how much for new ones, against getting your old ones reconditioned.

If they are not spraying properly it will have a big effect on performance/economy of your rig. spray pattern should look like a mist, if not there is problems

If they look melted it may have been caused by heat from too much fuel going in, so I really think the pyro gauge is a priority before doing much else.

Compare the cost of a pyro gauge against a new engine.......

Cobber, my last 2h turbo got 13l/100 around town or on the highway, start by checking the brakes, then check the air filter, exhaust system for blocked mufflers (does it sound like the exhaust is pressurising out the tailpipe), and lastly, get the injecters done and whilst there, a comp test...it might even have bad timing....you can get that checked b4 going into injecters.

Hows it going so far, have you had anything checked?

Any news on new/reco-ed injectors?

that was the main reason why i put the v8 in the fuel costs around town were a joke and even more scarey off road and if i was to put a load onto the 75 it was even more thirsty with the 2h lets say on a 70 litre tank i would be lucky to get 350 klms and in 4wd you could get 200 klms with the v8 im over double those fuel prices and thats turning the 37s

rob

On a n/a 2H you should get better economy with more load. I found I got under 11l/100k's with a full load and 12-13 without.

I have a turbo now I get 13.3l/100k's and I drive faster and overtake where I wouldn't previously.

Unsure if it will be more economical with a full load now as I've lost torque with the turbo, and I haven't loaded it right up since getting it.

I'd be blaming the 37's for the economy issues, I'm looking at some diff ratios for 35's.... but you can't hate a v8. :)

dibbz wrote:On a n/a 2H you should get better economy with more load. I found I got under 11l/100k's with a full load and 12-13 without.

I have a turbo now I get 13.3l/100k's and I drive faster and overtake where I wouldn't previously.

Unsure if it will be more economical with a full load now as I've lost torque with the turbo, and I haven't loaded it right up since getting it.

I don't understand how more weight gives you better economy? Nor do I understand how you have lost torque since you turboed your cruiser? I found the complete opposite in my old 60.

with the 2h i was running 35s and now with the v8 running 37s

sorry rob

carts wrote:

dibbz wrote:On a n/a 2H you should get better economy with more load. I found I got under 11l/100k's with a full load and 12-13 without.

I have a turbo now I get 13.3l/100k's and I drive faster and overtake where I wouldn't previously.

Unsure if it will be more economical with a full load now as I've lost torque with the turbo, and I haven't loaded it right up since getting it.

I don't understand how more weight gives you better economy? Nor do I understand how you have lost torque since you turboed your cruiser? I found the complete opposite in my old 60.

I agree, that doesn't make any sense.

I'm with these guys^^

Less fuel consumption with more load defies the laws of physics.

dogbreath_48 wrote:I'm with these guys^^

Less fuel consumption with more load defies the laws of physics.

not if someone was trying to drive it like it had no load, ie, foot to the floor pumping diesel out the exhaust.

Shadow wrote:

dogbreath_48 wrote:I'm with these guys^^

Less fuel consumption with more load defies the laws of physics.

not if someone was trying to drive it like it had no load, ie, foot to the floor pumping diesel out the exhaust.

i dont think that is what he was implying, but I take your point. Although, i would love to see a N/A 2h pull less than 11L/100km when fully loaded up.

carts wrote:

Shadow wrote:

dogbreath_48 wrote:I'm with these guys^^

Less fuel consumption with more load defies the laws of physics.

not if someone was trying to drive it like it had no load, ie, foot to the floor pumping diesel out the exhaust.

i dont think that is what he was implying, but I take your point. Although, i would love to see a N/A 2h pull less than 11L/100km when fully loaded up.

I cant see it pulling less than 14l/100 loaded up, mine doesnt anyway.